PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/20-16:28:10
G08     274.8          20.0                6.6 +/-    1.52      14.5 +/-    1.52  0.080 / 0.130
G10     48.3           60.9               25.2 +/-    0.52      28.4 +/-    0.52  0.090 / 0.170
G11     316.2          11.7                3.5 +/-   14.79       9.3 +/-   14.79  0.070 / 0.170
G14     254.0          61.5                9.0 +/-    0.76      10.1 +/-    0.76  0.060 / 0.200
G18     87.2           38.1               10.2 +/-    1.01      15.3 +/-    1.01  0.080 / 0.360
G21     152.4          17.9               12.5 +/-    2.16      28.9 +/-    2.16  0.110 / 0.340
G24     42.9           15.2                8.0 +/-    0.73      19.9 +/-    0.73  0.110 / 0.310
G27     235.5          19.6                9.8 +/-    1.42      21.9 +/-    1.42  0.100 / 0.290
G31     179.8          23.9               12.6 +/-    1.13      25.2 +/-    1.13  0.030 / 0.030
G32     314.5          76.0                9.8 +/-    0.69      10.0 +/-    0.69  0.030 / 0.030